﻿/*******************************************************************************************
 * Copyright (c) 2006-2009 Alex Robson, Rob Simmons, Craig Israel, and Rachel Twyford
 *
 * Use of this software in any form requires that you have both 
 * read and agreed to the following terms:
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the "Software"), 
 * to deal in the Software without restriction, including without limitation 
 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions: 
 *
 * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 * Redistributions in binary form must reproduce the above copyright notice, 
 * this list of conditions and the following disclaimer in the 
 * documentation and/or other materials provided with the distribution.
 * Neither the name of Nvigorate nor the names of its contributors may 
 * be used to endorse or promote products derived from this software without 
 * specific prior written permission. 
 *
 * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
 * DISCLAIMED. IN NO EVENT SHALL ANY CONTRIBUTOR BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 * ****************************************************************************************/

using System;
using System.Xml;
using System.Xml.Schema;
using System.Xml.Serialization;
using Nvigorate.Relational.Mapping.Interface;
using Nvigorate.Xml;

namespace Nvigorate.Relational.Mapping
{
    [Serializable]
    [AttributeUsage(AttributeTargets.Property, AllowMultiple = true)]
    public class MemberAssignment : Assignment, IXmlSerializable
    {
        public MemberAssignment()
        {

        }

        public MemberAssignment(bool primaryKey, string sourceField)
        {
            _source = new AssignmentPoint("", sourceField);
        }

        public MemberAssignment(string sourceField)
        {
            _source = new AssignmentPoint("", sourceField);
        }

        public MemberAssignment(bool primaryKey, string sourceEntity, string sourceField)
        {
            PrimaryKey = primaryKey;
            _source = new AssignmentPoint(sourceEntity, sourceField);
        }
        
        public MemberAssignment(bool primaryKey, string sourceEntity, string sourceField, string targetEntity, string targetField)
        {
            PrimaryKey = primaryKey;
            _source = new AssignmentPoint(sourceEntity, sourceField);
            _target = new AssignmentPoint(targetEntity, targetField);
        }

        public MemberAssignment(IAssignmentPoint source)
        {
            _source = source;
        }

        public MemberAssignment(IAssignmentPoint source, IAssignmentPoint target)
        {
            _source = source;
            _target = target;
        }

        public MemberAssignment(string sourceEntity, string targetEntity) : base(sourceEntity, targetEntity)
        {
        }

        #region IXmlSerializable Members

        ///<summary>
        ///This method is reserved and should not be used. When implementing the IXmlSerializable interface, you should return null (Nothing in Visual Basic) from this method, and instead, if specifying a custom schema is required, apply the <see cref="T:System.Xml.Serialization.XmlSchemaProviderAttribute" /> to the class.
        ///</summary>
        ///
        ///<returns>
        ///An <see cref="T:System.Xml.Schema.XmlSchema" /> that describes the XML representation of the object that is produced by the <see cref="M:System.Xml.Serialization.IXmlSerializable.WriteXml(System.Xml.XmlWriter)" /> method and consumed by the <see cref="M:System.Xml.Serialization.IXmlSerializable.ReadXml(System.Xml.XmlReader)" /> method.
        ///</returns>
        ///
        public XmlSchema GetSchema()
        {
            return null;
        }

        ///<summary>
        ///Generates an object from its XML representation.
        ///</summary>
        ///
        ///<param name="reader">The <see cref="T:System.Xml.XmlReader" /> stream from which the object is deserialized. </param>
        public void ReadXml(XmlReader reader)
        {
            throw new NotImplementedException();
        }

        ///<summary>
        ///Converts an object into its XML representation.
        ///</summary>
        ///
        ///<param name="writer">The <see cref="T:System.Xml.XmlWriter" /> stream to which the object is serialized. </param>
        public void WriteXml(XmlWriter writer)
        {
            writer.WriteRaw(GetXElementRepresentation().ToString());
        }

        #endregion
    }
}